Physics, 12.12.2019 04:31, Miguel1310
Consider a car travelling at 60 km/hr. if the radius of a tire is 25 cm, calculate the angular speed of a point on the outer edge of the tires. if the car takes 6 seconds to come to a stop, calculate the average angular acceleration of a point on the outer edge of the tires.
a.-0.11 rad/s 2
b. -40.0 rad/s 2
c. -2.78 rad/s^2
d. 11.1 rad/s 2
jack and jill have made up since the previous hw assignment, and are now playing on a 10 meter seesaw. jill is sitting on one end of the seesaw, while jack is some distance (d) from the fulcrum on the other side. if jack and jill have masses of 100 kg and 60 kg, respectively, where should jack sit in order to balance the seesaw?
a. 8 m from the fulcrum
b. 3 m from the fulcrum
c. not enough information.
d. 5 m from the fulcrum
Answers: 3
Physics, 21.06.2019 14:30, klogsdon4380
The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. which type of wave is found in this region? a. x-rays b. ultraviolet rays c. infrared waves d. radio waves
Answers: 2
Physics, 22.06.2019 05:50, kamrulh278
Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?
Answers: 3
Physics, 22.06.2019 11:00, taylorwhitfield6
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Consider a car travelling at 60 km/hr. if the radius of a tire is 25 cm, calculate the angular speed...
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